Windshield cleaning device



Oct. 31, '1939. w. J, SMITH wmnsnmw CLEANING -1312911015 Filed July 22, {1937 1 INVENTOR. Wu 5r .fimrso/v' 5mm. 7

/8 TN I Patented Oct. 31, 1939 UNITED STATES PATENT OFFlCE' V wmnsnmm omnmo nvrcn Wiley Jackson Smith, Bedford, Ind. Application July :2. 1931, Serial No. 155,081

' roam. 01. 20-4 'ever. when there is not sufficient rain to wash" away dust and dirt or when the windshield has been sprinkled with muddy water by a passing car or by passing through a mud puddle, the operation of the wiper usually results in muddy streaks on the windshield, which seriously hamper the vision of the driver.

One object of the present invention is to pro- 1 vide a convenient means for supplying waterto the windshield in sufllcient quantities to'clean the same thoroughly under the last-mentioned conditions. To this end, wateris drawn from the engine cooling system and discharged onto the windshield. A very small amount is required for each cleaning so there is no appreciable dimunition of the cooling water supply.

Another object of the invention is to clean from the windshield accumulations of ice which may form thereon during a sleet storm or freezing rain. This is accomplished by P riodical applica: tions of the hot water from the engine cooling system by the same apparatus used for removing dust and mud streaks.

Other objects and features of the invention will be readily understood from the accompanying drawing and the following description and claim:

Fig. 1 is a diagrammatic view of a portion of an automobile having one form ofthe invention applied thereto. Fig. 2 is a similar view with an alternative form of the invention. Fig. 3 is a similar view with a third form of the invention. Fig. 4 is a front view of the windshield of an automobile to which the invention has been applied in either of the three forms. v

In the drawing there is shown an automobile having the usual radiator ll, engine ll, windshield i2, instrument board It, water pump ll with connections ity and It for drawing water from the radiator to the cooling chambers of the engine and return line H for returning the water to the radiator. In Figs. 2 and 3, the exhaust manifold I 8 of the engine is also shown.

In each of the figures, there is shown a pipe I! connected to the return line l1 and terminating as shown in Fig. 4 adjacent the portion of the,

windshield l2 normally swept by a windshield on the instrument board of the automobile. When in its normal position the butterfly valve 2| is parallel to the direction of the line I! and does not impede the flow of water therethrough. when it is desired to supply water to the windshield, the 8 knob 23 is pulled, partially, closing the butterfly valve 2i and deflecting a jet of water through the pipe l9 to the surface of the windshield. The operation of the windshield wiper may then eifectlvely clean off any dust or accumulated muddy streaks on the windshield. The water need be supplied for only a fewseconds and then the button 22 may be pressed to return the butterfly valve to its normal position. If desired, a spring may be usedfor the return movement. 1 The form of the invention just described is adapted for use in an automobile having a water pump capable of supplying sufflcient pressure to.

elevate the water to the height of the windshield.

In Fig. 2 there is shown a form of the invention 20 for use with an enginein which the water pump does not have suflicient pressure to adequately supply the windshieldv but in which the exhaust gases are discharged from the engine under sufflcient pressure to operate a small ejector. In 25 this form of the invention, an ejector 24 of the fwell-knownjet type is placed in the pipe l9 and is provided with an internal jet 25 connected by a pipe 26 to the exhaust manifold. 1 A valve 2| is installed in the pipe and is operated by a rod 80 22' and button 28 in the same manner as the butterfly valve 2i is operated. By this means the valve 21 may be opened to supply exhaust gases under pressure from the exhaust manifold to the ejector 24. The partial vacuum created by the as ejector draws water from the return line I! and delivers the same to the windshield for cleaning.

The form ofthe invention shown in Fig. 3 is for use with engines in which the water pump is not capable of supplying sufficient pressure and in 40 which the exhaust gases are not under sufficient pressure to alone supply the necessary pumping action. In this form of the invention an ejector I24 having a jet I25, a connection I26 with the exhaust manifold and a valve I21 operates in the same manner as the ejector 24 previously described. In addition, there is placed in the return line I! a butterfly valve l2l. Both valves may be operated simultaneously by means of a button l2! and rods I28 and I22. In this form of the invention, the butterfly. valve I2| deflects the water from the return line H to the ejector. The ejector then provides suflicient additional force to'raise the water to the level of the windshield.

Each of the described forms of the invention, 5

whenuledvliththetypeoiengineioryhichitis msybeinstantaneouslyoperatedbythe driver to clear accumulations of dust or mud from the windshield. Each form also provides heated water for clearing away accumulations of ice. For thelatterpurpose.theiormsusingthehotexhaust gases are more eflicient since the additional heat derived from the gases decreasm the cooling hlchmiflttakeplaceinpassingthrwghplpe I The foregoing specification describes three preferred forms of the invention but is not to be considered as limiting the invention to the precise structures shown. The details may be varied by those skilled in the art without departing from the scope of the invention as defined in the appended claim.

The invention claimed is:

Incomhinationwithamotorvehiclehavingan engine,aradiator,apmnp andconnectionsmr passing'acoolingmiidtromsaidndiatortolaid engine, areturnlineiorsaidiinidiromsaidmginetosaidradiatonawindshieldandanexhn t maniiold; apipeconnectedtonidieturnline and terminating adjacenttheoutermri'aceoinid windshieliavalveinsaidretumlinebetwem saidpipeandsaid radiator adapted henna:- tialiyclosedtodeflectcoolingfluidtmmsaidreturnlinetosaidnlpe.ane.iectorinsaidplpe.a connectionbetweensaideiectorandsaidexhamt manifold for delivering exhaust gases to operate said ejector for forcing cooling fluid throuah said pipe to said windshield, a valve in said connection, and means for operating both or said valves.

WILEYJACKSONBMITH. 

